James holmes



N- PETERS. PHOTO-LITHDGRAPHEH. WASHINGTON D C @uitchttttrastwt @Hita JAMES HOLMES, OEEELEAST',v MAINE,v

Leners Parent No. 82,718, dated 0mm 6, 186s.

IErEovEEmNT -INsrAvE-EAGHINES.

To ALL WHoM IT MAY' coNcEEN: y

Be it known that L JAMEs HOLMES., of Belfast, in the county of Waldo, and State of Maine, have invented anew and improved stave-Machine ;v and 'I'do hereby declare that the following is a full and exact description thereof, which will enableothers skilledin the art to make and usejthe same, referencebeing had to the accompanying drawings, andto the letters 4of reference marked thereon. 4 4 n This invention relates to improvements in machines for sawing staves,A and it consists in the arrangement o f parts whereby the bolts are fed evenly to the saw. Y

In the accompanying sheet of drawings- Figure lis a plan or top view of my invention. v

Figure 2, a longitudinal vertical section of thesame, takenin the linevznx, fig. 1.

Figure 3, a transverse vertical section of the same, taken in the line y y, iig. `1.

Figure 4, a' detached side view ofthe bolt-carriage pertaining 4to the same.

Figure 5, a detached side view'of aportion of a rack-bar pertaining to the same.

Similariletters of reference indicate like parts. v v

.A .represents the framing of the device, which may be constructed in any proper manner to support the working parts, and B B are two parallel ways or guides on the framing, on which the bolt-carriage C works.`

In the framing A, b'etweenthe two ways B, there is placed a shaft, D, whichis parallel with the ways, andis connected atits inner end, by bevel-gearsl a, with a transverse shaft, E, having a'pinion,'-6, at one end.

To the inner side of one of the ways B, there is attached, by a pivot-bolt, c, a bar, F, the bolt c passing through the bar F, near one end of the same, asvshown clearly in iig. 2. v

This bar F-has an oblong recess made in one side, and in this recess there is secured a metal bar, G'r, which does not extend down tothe bottom Vofthe recess, a space, d, being allowed lbetween its Alower edge and the bottom of the recess, and a, space, e,"also allowed at each end. A

In the bolt-carriage C there is placed a shaft, H, havingfa pinion,f, on each end of it, and these pinionsf gear into racks, g l@placed at the endsof the bolt-carriage, said racks being allowed to slide freely in suitable guides, and having the bolt L-,from' which the staves are cut, attached toV their outer ends.

The holt-carriage C also hasabar, J, secured to its under side` This bard is parallelzwiththe ways or guides B B, extends -at one end some" distance beyond the bolt-carriage, and'has-a bar, K, pivote'd to its extendedA end, as shown at L, the pivot'lz passing through ,one end yof har.K, and the latter having a rack, z', attached to its lower edge, which rack is directly over the pinion b o ,fv shaft E, (see g. 2.).

The rack z'has a lateral projection or pixnj, tits front end, the use. of which will be presently shown.

This pin or projection is shown clearly in flg. 5. The bar F has a spring, c, attached to it, and this spring has i,

a tendency to keep the bar F down, (see-iig. 2*.)

In the bolt-carriage C there is placed another shaft, lh, whichis'iparalllel with the shaft H.. The shaft L hasta small pinion, Z, on .each'end of it, saidp'rnionsvhaving only four teeth each, y(see iig. 4;)

These pinions gear in'to the racks gg, and underneath the pinion Z the arms m, of. pawlsr'M, bear, the other arms, m', of said pawls, engaging with the racks g, above them, (see Eg. 4.)

y There is also a shaft, N, tted in the bolt-carriage, parallelwith the shafts E L, and having a pendent projection, n, at each end, by whichthe arms m y of the pawlsvM may be acted upon by turning the shaft N, Aand the pawls forced down or depressed, so that the upper arms m" will b e out from the racks g.

On one end of the shaft L there'ris a ratchet, O,- having four' teeth, like the pinions Z. This ratchet O. has a pawl, o, which engages with it, said pawl being connected to aV lever, B, which is'tted loosely on the shaft L, (see Eg. 3.) v v To oneend of the framing-of the machine there is attached an inclined rod, Q.

The operation is as follows: i

The shaft D may be rotated by any convenient power, and the bolt I is fed towards the saw whenl the` bolt*- Y' carriage is moved in the direction indicated byarrow 1, the rack z' of the bar'rK, in this case, being in gear ven the carriage. The rack i is kept in with the pinion b of shaft E, by which means the'feed-movement is gi d rack being in the space d, underneath gear with the pinion b, in consequence of the pin or projection j on sai the bar Gr.

When the' bolt-carriage reaches the termination of this feed-movement, the pin or projeotion j comes in line with the space e at the inner end ofthe bar G, the pin or projection, and consequently the rack z' and bars K F, being slightly raised by a slight upward curvature of a. metal bar, (see tig. 2,) and the rack i is thereby raised or thrown out from the pinion b, so that a Weight, R, (shown in red, and attached to the bolt-carriage by a cord or chain,`) will draw back the bolt-carriage.

Before the bolt-carriage reaches the termination of this gigging-back movement, the end of the lever P comes in contact with the inclined rod Q, and the latter causes said lever to be moved, the pawl o, in consequence of being engagedwith the ratchet O, turning shaft L, and setting the bolt I to the saw, the pinions l eiecting the setting-movement of the bolt, and throwing down the pawls M, so as to free or liberate the racks g g, in order to admit of them being moved by said pinions.

As the bolt-carriage reaches the termination of its gigging-back movement, the pin or projection j, passes down through the space e at the outer end of the bar G, by virtue of the gravity of the bar K and the rack z',

so that the pin or projection will again be in the space d during the return or feed-movement of the boltcarriage.

The staves are cutby a circular saw, arranged in the usual Way. The shaft H, with its pinionsff, is for running back the racks g g', when a new bolt is to be applied. To effect this, the shaft N is previously turned, so that the pendants n may press down the pawls M and free the racks from the arms m' of the pawls, the latter being pressed upward by springs, aX.

Having thus described my invention, I claim as new, and desire to secure by Letters Patent- The pinionsj` and shaft H, arranged with reference tothe racks g of the bolt-carriage, the shaft'L, pinions Z, shaft N, pawl o, and lever P, whereby the bolt-carriage is moved evenly toward the saw, as herein described for the purpose specified.

JAMES HOLMES.

Witnesses:

J. B. Minnen, I. S. CALDWELL. 

